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Coffee Preparation Procedures
1)
Place filter into brew basket.
2)
Put the proper amount of coffee into the filter.
3)
Slide the brew basket into holder.
4)
Place the appropriate empty decanter into position below the brew basket. For airpots first open lid and remove
pump stem unless of a brew through design. For other dispensers remove the lid unless it is a brew through
design.
5)
Press the appropriate brew start switch. Note: a brew cycle may be initiated even if the heating light is on. The
brewer features an autoarm circuit which will flash the heating light indicating that the brewer is heating and will
begin to brew immediately after the heating cycle is complete. To over ride autoarm, hold in brew button until
cycle starts (5 seconds).
6)
Do not remove decanter. Brew cycle may be canceled by depressing any brew button or the cancel switch on
the front control panel.
7)
Hot water will be delivered through the sprayhead. This distributes the hot water evenly over the coffee bed
within the brew basket. The coffee brew will drain from the brew basket into the decanter below.
8)
The Brewing light should continue to flash until all the liquid has finished flowing from the brew basket. Do not
remove decanter until the brewing process has stopped and all liquid has stopped flowing from the brewbasket.
9)
The resultant coffee brew should be crystal clear and have the desired properties attainable through excellent
extraction.
10)
To clean brew basket simply remove from brew rails and dump filter into waste basket. The brewing process, as
described above, can now be started again.
Error Messages
This brewer incorporates a number of self diagnostic test that are routinely run. If a fault condition should occur the
unit will display an error number as outlined below. All errors may be reset by powering unit off and then back on.
Errors E1 and E2 are auto-resttable and will clear themselves if the condition that caused them goes away. You may
still brew, but call for service. E3 will disable heater but will allow brewing to take place. E4 and E-A must have power
to unit cycled to clear them. E5 will force brewer to use its default settings for brewing. E7 and E8 will clear when a
brew cycle is started. E9 will disable input from dsplay board. If error repeats, correct the cause of the error.
Error
Description
Number
E1
Open
Thermistor
E2
Shorted
Thermistor
E3
Heater Run
Error
E4
Tank Fill Error
E5
Comm Error
E7
Open Motor
Circuit
E8
Bad (Open)
Motor Driver
E9
SPI Comm Error
E-A
Possible Leak
Detected
Full
Filter Full
OPERATION INSTRUCTIONS
Cause
Resistance extremely high from
upper or lower thermistor
Resistance extremely low from upper
or lower thermistor
Water did not heat within timeout
period
Water did not reach probe in timeout
period
Serial communication error to/from
non-volatile memory (EEPROM).
Open motor circuit. Pump 0 or
pump 1.
Bad/open motor driver. Pump 0 or
pump 1.
Serial communication error to/from
display board.
Water system may have a leak.
Water filter has reached capacity.
Manual PN 119985 Rev 02-06 Firmware Rev 4
What to Check
Check/replace thermistor.
Check/replace thermistor.
Check element for short and proper
resistance. Replace if bad.
Check valve function and flow rate.
Replace valve or increase flow rate. Check
probes for excess scale.
Replace main board.
Check harness/motor continuity. Replace
if defective.
Replace main board.
Verify good connection in proper port. Try
new display board. Try new main board.
Check all plumbing system components for
possible leak. Look for water on counter.
Replace filter.
4
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